doc: update guide link for Event Loop

PR-URL: #51874
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Qingyu Deng <i@ayase-lab.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Claudio Wunder <cwunder@gnome.org>
Reviewed-By: Tierney Cyren <hello@bnb.im>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>

doc/api/process.md

@@ -3969,7 +3969,7 @@ cases:
 [Child Process]: child_process.md
 [Cluster]: cluster.md
 [Duplex]: stream.md#duplex-and-transform-streams
-[Event Loop]: https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#process-nexttick
+[Event Loop]: https://nodejs.org/en/learn/asynchronous-work/event-loop-timers-and-nexttick#understanding-processnexttick
 [LTS]: https://github.com/nodejs/Release
 [Permission Model]: permissions.md#permission-model
 [Readable]: stream.md#readable-streams